Rumors about the next-generation Xbox have been circulating for years. The next-generation Xbox, or Xbox 720 as some call it, is expected to launch later this year. There are some indications that Microsoft might unveil the next-generation Xbox ahead of E3 2013. Other rumors have put the price of the next-generation Xbox at around $400.

While most details of the next-generation console remain to be seen, leaked specs have surfaced this week that give some hardware specifications for the processor that will be the brains of the next-generation Xbox. The processor has x64 architecture and eight cores running at 1.6 GHz. Each of those CPU threads has its own 32 kB L1 instruction cache and 32 kB L1 data cache. Each module of the four CPU cores has its own 2 MB L2 cache giving the processor a total of 4 MB of L2 cache.

VGLeaks reports that each core has one fully independent hardware thread and doesn't share execution resources. Each hardware thread is also reportedly able to issue two instructions per clock cycle. The next-generation Xbox GPU is reportedly a custom D3D 11.1 class unit running at 800 MHz with 12 shader cores and 768 total threads.

Each of those threads is reportedly able to perform one scaler multiplication and additional operation per clock. A natural user interface sensor is also always present. That processor is reportedly paired with 8 GB of DDR3 RAM and 32 MB of fast embedded SRAM.

The machine is also paired with a 6x Blu-ray drive, gigabit Ethernet, Wi-Fi, Wi-Fi Direct, and various hardware accelerators for image, video, and audio codecs. The machine is also tipped include a Kinect multichannel echo cancellation hardware chip and cryptography engines for encrypting and decrypting content.

I'm curious about this too. But looking at Wikipedia's article on the Radeon R1000 family at http://en.wikipedia.org/wiki/Radeon_R1000, the 7870 has 1280 Unified shaders, 80 TMUs, and 32 ROPs. When the article says "shader cores", are they referring to TMUs?

That may be the case, but believe it or not, the amount of performance gain you can get by optimizing your entire platform for a specific card can be enormous. Running at almost 50% the speed of a 7870 may still produce comparable results.